In the story called The most dangerous games there is a question and the question is What surprise awaits Zaroff in his bedroom? and I need help with that .
The 'surpise' in Zaroffs bedroom was a suprise attack from Rainsford. For him, the most dangerous of hunts is not over yet as he is cornered in Zaroff's room (hence the allusion to baying) and has no choice but to fight.